For someone who obsessively posts bikini photos of herself on twitter, it's unusual to see Kim Kardashian in a one-piece swimsuit.

We spotted the reality star with her sister Kourtney filming "Kourtney and Kim Take Miami" in Florida yesterday. Kim wore a white one-piece bathing suit with a matching cover-up. She carried her flip flops.

The reality star dipped her toes in the ocean and strolled along the beach with her sister, who gave birth to her second child, Penelope, in July. Kourtney elected not to show off her post-baby body in a swimsuit.

Meanwhile, Kim's boyfriend Kanye West is dealing with not one but TWO sex tape leaks. The films were reportedly stolen from his personal computer.

See more photos of Kim on the beach...